KR200233082Y1 - A Valve for preventing overflow and pressure - Google Patents

Abstract

The present invention relates to an overflow and internal pressure prevention valve for preventing fluid from being discharged to the outside through the overflow pipe of the tank, and prevents the flow out of the water tank through the overflow pipe as well as by one-touch operation. It is an object of the present invention to provide an overflow and pressure resistant valve that can be easily used by preventing pressure and vacuum in the tank.

An object of the present invention as described above and the first valve is coupled to one end of the tank pipe for replenishing or discharging the fluid; A second valve having one end coupled to an overflow pipe for discharging internal pressure in the tank and allowing air to flow into the tank; A body connection part capable of separating and coupling the first valve and the second valve; The first connecting shaft and the first connecting shaft are inserted into the first rotating shaft of the first valve and protruded so that the opening and closing of the first valve and the second valve can be performed at the same time. It is achieved by an overflow and pressure resistant valve characterized in that it comprises a shaft connecting portion having a second connecting shaft.

Description

A valve for preventing overflow and pressure}

The present invention relates to an overflow and internal pressure prevention valve for preventing fluid from being discharged to the outside through an overflow pipe of a tank, and in particular, a valve for replenishing or discharging a fluid to a tank and an internal pressure in the tank to discharge internal pressure It is related with an overflow and pressure resistant valve for preventing fluid from being discharged to the outside of the tank through the overflow pipe of the tank through the opening and closing operation at the same time by the one-touch valve.

In general, fire trucks equipped with tanks for emergency suppression of fires are urgently dispatched, so they often make rapid braking and sudden rotations during operation.At this time, a large amount of water is supplied to the road through an overflow pipe installed to prevent internal pressure release and vacuum of the tanks. Sowed. As a result, the road freezes in winter, causing traffic jams and traffic accidents, and when the fire site ramp is inclined, it is difficult to enter a late fire engine due to freezing of the road. In order to solve this problem, a method of capping the overflow pipe in the tank may be devised, but this is inconvenient to open the cap every time so that the tank does not generate pressure and vacuum when water is added to or discharged from the tank. .

Therefore, the object of the present invention devised to solve the above problems is not only to prevent the fluid from flowing out of the tank through the overflow tube, but also to provide pressure and vacuum to the tank automatically when refilling or discharging the tank. It is to provide a valve for preventing the overflow and pressure resistance.

Figure 1 is a schematic diagram installed on the fire truck with a valve for preventing overflow and pressure in accordance with the present invention

Figure 2 is a front view of the overflow and pressure resistant valve according to the present invention

3 is an assembled cross-sectional view of the overflow and pressure resistant valve of FIG.

4 is a front view of the overflow and pressure resistant valves assembled at different angles according to another embodiment of the present invention;

Figure 5 is a schematic diagram showing the water supply and drainage of the conventional fire truck tank

<Description of the symbols for the main parts of the drawings>

One ; Overflow and pressure resistant valves 2; Absorption valve 3; Relay waterproof valve

4 ; Main valve 5; Self-supply valve 6: maintenance valve 7; Overflow pipe

8 ; Overflow piping 10; First valve 20; Second valve 30; Body Connection

40; Shaft connection part 50; Tank piping 60; Tank

In order to achieve the above object, the overflow and pressure-resistant valve according to the present invention includes a first valve having one end coupled to the tank pipe for replenishing or discharging the fluid to the tank; A second valve having one end coupled to an overflow pipe for discharging internal pressure in the tank and allowing air to flow into the tank; A body connection part capable of separating and coupling the first valve and the second valve; The first connecting shaft and the first connecting shaft are inserted into the first rotating shaft of the first valve and protruded so that the opening and closing of the first valve and the second valve can be performed at the same time. It is configured to include a shaft connecting portion having a second connecting shaft to prevent the fluid in the tank to be discharged to the outside through the overflow pipe, as well as to prevent internal pressure and vacuum in the tank.

The features and advantages of the present invention will become more apparent from the following detailed description when compared to a conventional device.

As shown in FIG. 5, the water supply and drainage apparatus of the conventional fire truck tank, when the water is to be discharged from the tank for fire suppression, the water pump 9 is operated by using the engine output of the fire truck The water is drawn from the tank through the main valve 4 coupled to the pipe connected to the tank, and then discharged through the relay waterproof valve 3. In addition, when the tank is to be replenished with water, the water pump 9 is operated to draw water from the reservoir (not shown) through the absorption valve 2, and then is coupled to the tank pipe 50 directly connected to the tank. The water is replenished into the tank through the self-supply valve 5, or the water is replenished into the tank through a maintenance valve 6 coupled with a tank pipe 50 connected to the tank from a hydrant (not shown). When replenishing or discharging water to the tank as described above, outside air is introduced or internal pressure is discharged to the outside through the overflow pipe 7 which is vertically extended to the bottom of the tank and protrudes out of the tank. This prevents the generation of vacuum. However, in the case of sudden braking and rapid rotation during operation as described above, the water in the tank is directed to one side so that the water is discharged to the outside of the tank through the overflow pipe (7).

Therefore, the most preferred embodiment according to the present invention that improves the problems of the conventional apparatus described above will be described below with reference to the drawings.

1 is a schematic diagram of installing the overflow and pressure resistant valve according to the present invention in a fire truck, the place where the overflow and pressure resistant valve according to the present invention is installed in a fire truck is a tank directly connected to the conventional fire truck tank 60 Overflow and withstand pressure according to the present invention as shown in FIG. 1 in place of the conventional main valve 4, the self-water supply valve 5 and the maintenance valve 6 shown in FIG. 5 coupled with the pipe 50. Install and replace the prevention valve (1), and the overflow pipe (8) which removes the bottom of the conventional overflow pipe (7) protruding out of the tank (60) and the overflow pipe (8) connected from the outside of the tank. Produced by connecting to the pipe (8) to install the combined overflow and pressure-resistant valve (1) according to the present invention. That is, in the case where the water is to be discharged from the tank for fire suppression, the overflow and internal pressure prevention valve 1 coupled to the tank piping 50 and the overflow piping 8 connected to the tank is opened, When the water pump 9 is operated by using the engine output of the fire engine, since the air is injected into the tank from the outside of the tank through the overflow pipe 8, the overflow and pressure preventing valves smoothly coupled to the tank pipe 50 ( Water is introduced into the water pump 9 through 1) and then discharged through the relay waterproof valve 3. In addition, when the tank is to be replenished with water, the overflow and internal pressure prevention valve 1 coupled to the tank piping 50 and the overflow piping 8 connected to the tank is opened, and the water pump 9 When the water is introduced into the water pump 9 from the water tank, the internal pressure generated inside the tank is released through the overflow pipe 8, and air is introduced into the tank to prevent the vacuum state. The tank may be replenished with water through the overflow and pressure resistant valve 1 coupled to the tank 50. In the same way, water is replenished into the tank via a maintenance valve 6 coupled to a tank piping 50 directly connected to the tank from a hydrant (not shown). In addition, the overflow and internal pressure prevention valve 1 is in a closed state during operation, and the tank 60 is external to the overflow tube 7 ＇from which the lower end of the conventional overflow tube 7 protruding outside the tank 60 is removed. Since only the overflow pipe 8 is connected, the water in the tank is not discharged to the outside. Therefore, when the overflow and pressure resistant valves according to the present invention are used, the tank 60 may not only be prevented from being discharged to the outside of the tank 60 through the overflow pipe 7 as in the prior art during operation. Even when replenishing or discharging water to the tank, the internal pressure and vacuum can be easily prevented by a one-touch valve operation as in the related art, thereby smoothly replenishing or discharging water into the tank. The overflow and pressure resistant valve 1 according to the present invention having the advantages as described above will be described below with reference to FIGS. 2 and 3.

FIG. 2 is a front view of the overflow and pressure resistant valve according to the present invention, and FIG. 3 is an assembled cross-sectional view of the overflow and pressure resistant valve 1 of FIG. 2, and FIGS. 2 and 3 are tanks connected to the tank 60. One end is coupled to the pipe 50 and the overflow pipe 8. As shown in FIGS. 2 and 3, the overflow and pressure resistant valve 1 includes a first valve 10, a second valve 20, a body connection part 30, and a shaft connection part 40. The valve 10 forms a first flow shaft 12 controlled by the operating handle 11 and the operating handle 11, a first disk 13 opened and closed by rotation of the first rotating shaft, and a fluid flow path. It consists of one body 14. In addition, the second valve 20 is composed of a second rotary shaft 21, a second disk 22 which is opened and closed by the rotation of the second rotary shaft, and a second body 23 forming a fluid flow path. Generally, the first valve 10 is a ball valve and the second valve 20 is a butterfly valve, but is interchangeable, and is formed at both ends of the first body 14 and the second body 23. Since the flange is only a means for fastening with the pipe can be transformed into a variety of fastening means. In addition, the shaft connecting portion 40 is the first rotating shaft so that the first disk 13 and the second disk 22 can be opened and closed at the same time and the coupling angle of the first valve 10 and the second valve 20 can be adjusted. The first connecting shaft 41 and the first connecting shaft 41 having a plurality of teeth in the axial direction on the outer circumferential surface of the first valve 10 and protruding integrally with the 12 are provided. It is composed of a second connecting shaft 42 which is inserted into the second rotation shaft 21 to be engaged and engaged, has a hollow shape, and has a plurality of teeth on the inner circumferential surface, and the body connecting portion 30 may use a flange as a means for coupling the first body 14 and the second body 23 so that the first valve 10 and the second valve 20 can be separated and coupled.

Referring to the overflow and pressure-resistant valve (1) configured as described above in detail according to the operating sequence, when the tank is replenished or discharged water rotates the operation handle 11 in the opening direction. Rotation of the operation knob 11 causes the first rotation shaft 12 to rotate while opening the first disk 13 while simultaneously rotating the first connection shaft 41 extending on the first rotation shaft. The first connecting shaft 41 transmits the rotational force to the second connecting shaft 42 which is engaged, and the second rotation shaft 21 rotates to open the second disk 22 by the rotational force. Further, when the operation knob 11 is in the closing direction for driving, the first valve and the second valve are closed at the same time as described above.

4 is a front view of the overflow and pressure resistant valves assembled at different coupling angles according to another embodiment of the present invention, and formed on the first connecting shaft 41 and the second connecting shaft 42 of the shaft connecting portion 40. It is shown that the first valve 10 and the second valve 20 can be adjusted at various angles by a plurality of tooth structures.

In addition, the present invention can be used not only for the fire truck equipped with the tank, but also for the main valve and the intake valve of a dangerous goods transport vehicle to prevent leakage of dangerous goods in case of a dangerous goods tank such as a gas station where fluid does not flow out of the tank or overturning. Do.

As described above with respect to preferred embodiments of the present invention, those of ordinary skill in the art to which the present invention belongs, various modifications of the present invention without departing from the spirit and scope of the present invention defined in the appended claims It will be appreciated that it may be modified or implemented. Therefore, the change of the embodiment of the present invention in the future will not be beyond the technical scope of the present invention.

By using the overflow and pressure-resistant valve according to the present invention, it is possible to prevent the fluid flowing from the tank in the winter to freeze the road, thereby preventing safety accidents such as traffic accidents.

In addition, it is possible to prevent the access road from freezing even when the fire site access road is inclined in winter, it is easy to enter the late fire engine, it is possible to extinguish the fire more quickly to protect the property and life of the people.

Claims (2)

A first valve having one end coupled to a tank pipe for replenishing or discharging fluid to the tank; A second valve having one end coupled to an overflow pipe for discharging internal pressure in the tank and allowing air to flow into the tank; A body connection part capable of separating and coupling the first valve and the second valve; The first connecting shaft and the first connecting shaft are inserted into the first rotating shaft of the first valve and protruded so that the opening and closing of the first valve and the second valve can be performed at the same time. Overflow and pressure resistant valve characterized in that it comprises a shaft connection having a second connecting shaft The method of claim 1, wherein the shaft connecting portion is characterized in that a plurality of teeth are formed on the first connecting shaft and the second connecting shaft so that the first valve and the second valve can be coupled at various angles. Overflow and pressure resistant valves